Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and links to their rpeorts go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 1924
interventional 1481
Observational 422
Registry 21

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 385
Drug|placebo 306
Device 200
Other 192
Behavioral 160
Procedure 49
Device|Other 21
Biological 12
Device|Drug 12
Dietary Supplement 12
Behavioral|Other 10
Behavioral|Device 9
Drug|Other 9
Device|placebo 8
Diagnostic Test 8
Dietary Supplement|placebo 8
Drug|Procedure 8
Biological|Other 5
Other|Procedure 5
Device|Procedure 4
Genetic 4
Other|placebo 4
Biological|placebo 3
Drug|Other|placebo 3
Radiation 3
Behavioral|Drug 2
Behavioral|Drug|placebo|Procedure 2
Behavioral|Procedure 2
Biological|Procedure 2
Device|Diagnostic Test 2
Device|Drug|placebo 2
Drug|Radiation 2
placebo 2
Behavioral|Biological|Diagnostic Test|Other 1
Behavioral|Device|Drug 1
Behavioral|Dietary Supplement|placebo 1
Behavioral|Other|Procedure 1
Behavioral|Other|Radiation 1
Behavioral|placebo 1
Behavioral|Radiation 1
Biological|Drug 1
Combination Product 1
Combination Product|Drug|placebo 1
Combination Product|placebo 1
Device|Diagnostic Test|Other 1
Device|Drug|Other 1
Device|Drug|Other|placebo 1
Device|Drug|Other|Radiation 1
Device|Genetic 1
Diagnostic Test|Drug 1
Diagnostic Test|Other 1
Dietary Supplement|Drug|placebo 1
Dietary Supplement|Other 1
Drug|Genetic|Other 1
Drug|Other|Radiation 1
Drug|Procedure|Radiation 1
Genetic|Other 1
placebo|Procedure 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 551
NA 113
France 108
Italy 46
Canada 42
Germany 38
China 36
Brazil 34
United Kingdom 34
Japan 33
Taiwan 26
Spain 25
Korea, Republic of 24
Portugal 18
Sweden 18
Belgium 17
Israel 17
Netherlands 16
Turkey 15
Switzerland 14
United States|Canada 12
Denmark 10
Austria 8
Australia 5
Finland 5
Norway 5
Finland|Sweden 4
Austria|France|Germany|Italy|Spain|United Kingdom 3
Cuba 3
Egypt 3
France|United Kingdom 3
Hong Kong 3
Hungary 3
Malaysia 3
Mexico 3
Slovenia 3
Thailand 3
United States|Puerto Rico 3
Argentina 2
Austria|Czech Republic|Hungary|India|Italy|Korea, Republic of|Philippines|Poland|Russian Federation|Slovakia|Spain|Sweden|Ukraine|United Kingdom 2
Belgium|Germany 2
Ireland 2
New Zealand 2
Poland 2
Singapore 2
South Africa 2
United States|Argentina|Belgium|Bulgaria|Canada|Chile|Colombia|Croatia|Finland|India|Israel|Mexico|New Zealand|Peru|Romania|Russian Federation|Serbia|Slovakia|South Africa|Sweden|Ukraine 2
United States|Austria|France|Germany|Spain 2
United States|Belgium 2
United States|Canada|Czechia|Poland|Spain 2
United States|Canada|Puerto Rico 2
United States|Germany 2
United States|Israel 2
United States|Netherlands 2
Australia|Austria|Croatia|Czech Republic|Finland|France|Germany|Hungary|Israel|Italy|New Zealand|Norway|Poland|South Africa|Spain|Sweden|United Kingdom 1
Australia|Canada|Finland|France|Germany|Italy|Japan|Spain 1
Australia|Germany|Sweden|United Kingdom 1
Australia|Korea, Republic of|Malaysia|Singapore|Taiwan 1
Australia|New Zealand 1
Australia|Philippines|Taiwan|Thailand 1
Australia|Spain 1
Austria|Belgium|Bulgaria|Czech Republic|France|Germany|Hungary|Italy|Romania|Slovakia|Spain|Switzerland 1
Austria|Belgium|Czech Republic|South Africa|Estonia|France|Germany|Hungary|Israel|Italy|Lithuania|Poland|Portugal|Serbia|Spain|Sweden|United Kingdom 1
Austria|Canada|Denmark|France|Germany|Morocco|Netherlands|Portugal|South Africa|Spain|Sweden|Tunisia|United Kingdom 1
Austria|Canada|France|Germany|South Africa 1
Austria|Czechia|France|Germany|Netherlands|Portugal|Spain|United Kingdom 1
Austria|Denmark|France|Germany|Netherlands|Spain|United Kingdom 1
Austria|Finland|France|Germany|Italy|Netherlands|Norway|Romania|Russian Federation|South Africa|Spain|Sweden|Ukraine 1
Austria|France|Germany|Italy|Spain 1
Austria|France|Germany|Netherlands|Spain|United Kingdom 1
Austria|Germany|Italy|Spain 1
Austria|Germany|United Kingdom 1
Belarus 1
Belgium|Israel 1
Belgium|Israel|Italy|Netherlands|United Kingdom 1
Belgium|Netherlands|United Kingdom 1
Bolivia 1
Brazil|Canada 1
Bulgaria|Canada|Czechia|France|Germany|Hungary|Italy|Poland|Romania|Russian Federation|South Africa|Spain|Ukraine|United Kingdom 1
Bulgaria|Malta|Serbia 1
Canada|Finland|France|Netherlands|Spain|Switzerland|United Kingdom 1
Canada|France|Germany|United Kingdom 1
Canada|United States 1
Chile 1
China|Japan 1
Czech Republic|France|Germany|Italy|Serbia|Spain 1
Czech Republic|Germany|Hungary|Poland|Romania|Spain|United Kingdom 1
Czechia 1
Denmark|Finland|Germany|Ireland|Sweden|United Kingdom 1
Finland|Germany|Hungary|Latvia 1
France|Germany 1
France|Germany|Netherlands 1
France|Netherlands 1
France|Russian Federation 1
France|United States|Austria|Czechia|Germany|Israel|Italy|Poland|Spain 1
Germany|Ireland 1
Germany|Poland 1
Germany|South Africa 1
Germany|Sweden|United Kingdom 1
Greece 1
Hungary|United States|Belgium|Czech Republic|France|Germany|Italy|Poland|Spain 1
Iceland 1
India 1
India|Israel|United Kingdom 1
Israel|Poland|Serbia 1
Israel|Serbia|United Kingdom 1
Italy|United States|Canada|Czechia|Germany|Israel|Poland|Serbia 1
Japan|Korea, Republic of|Taiwan 1
Jordan 1
Norway|Sweden|United Kingdom 1
Peru|United States|Argentina|Australia|Austria|Belgium|Colombia|France|Germany|Greece|Italy|Mexico|Puerto Rico|Spain 1
Poland|Portugal|United States|Australia|Czech Republic|Estonia|France|Germany|India|Italy|Lithuania|Malaysia|Netherlands|South Africa|Spain|Taiwan|Thailand|United Kingdom 1
Poland|Portugal|United States|Australia|Czech Republic|Estonia|Germany|India|Italy|Lithuania|Malaysia|Netherlands|South Africa|Taiwan|Thailand 1
Portugal|Romania|Ukraine 1
Romania|Ukraine 1
Romania|United States|Austria|Belgium|Czechia|France|Germany|Hungary|Israel|Netherlands|Poland|Serbia|Spain|United Kingdom 1
Russian Federation 1
Serbia|United Kingdom 1
Slovakia 1
Slovakia|Taiwan 1
Spain|Sweden|Switzerland|Australia|Austria|Belgium|Croatia|Czech Republic|Finland|France|Germany|Hungary|Israel|Italy|Netherlands|New Zealand|Norway|Poland|South Africa|United Kingdom 1
Sweden|United Kingdom 1
Switzerland|United States|Austria|Canada|France|Germany|Hungary|Italy|Slovakia|Spain 1
United States|Albania|Argentina|Brazil|Bulgaria|Canada|Chile|Colombia|Latvia|Lithuania|Peru|Russian Federation|Ukraine 1
United States|Argentina|Australia|Austria|Belgium|Canada|France|Germany|Italy|Netherlands|Spain|Turkey|United Kingdom 1
United States|Argentina|Austria|Czech Republic|Finland|Germany|Hungary|India|Japan|Malaysia|Russian Federation|Slovakia|Taiwan|Ukraine 1
United States|Argentina|Brazil|Bulgaria|Canada|Chile|Colombia|Croatia|Czech Republic|Finland|Germany|India|Italy|Mexico|Peru|Poland|Portugal|Slovakia|South Africa|Spain 1
United States|Argentina|Brazil|Bulgaria|Canada|Chile|Colombia|Latvia|Lithuania|Peru|Russian Federation|Ukraine 1
United States|Argentina|Canada|Chile|Romania|Ukraine 1
United States|Argentina|Chile|Estonia|Korea, Republic of|Russian Federation|Slovakia 1
United States|Argentina|Mexico|Puerto Rico 1
United States|Australia 1
United States|Australia|Austria|Belgium|Canada|Estonia|France|Germany|Hungary|India|Israel|Korea, Republic of|Malaysia|Netherlands|New Zealand|Slovakia|Spain|Switzerland|Taiwan|Thailand|United Kingdom 1
United States|Australia|Austria|Finland|Germany|Hungary|Italy|New Zealand|Poland|South Africa|Spain|United Kingdom 1
United States|Australia|Austria|France|Germany|Greece|Israel|Italy|Norway|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|Germany|Italy|Japan|Netherlands|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|Italy|Japan|Netherlands|Spain|United Kingdom 1
United States|Australia|Canada|Czech Republic|Finland|Germany|Israel|Italy|Netherlands|New Zealand|Poland|Portugal|Russian Federation|Spain|Thailand|United Kingdom 1
United States|Australia|Canada|Czechia|Israel|New Zealand|Poland|Portugal|Russian Federation|Thailand|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy 1
United States|Australia|Canada|Germany|Greece|Italy|Korea, Republic of|Spain|Sweden 1
United States|Australia|France 1
United States|Austria|Belgium|Canada|Finland|France|Germany|Greece|Italy|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Austria|Belgium|Canada|France|India|Italy|Poland|Portugal|Russian Federation|Serbia|Sweden|Ukraine|United Kingdom 1
United States|Austria|Belgium|Italy|Poland|Portugal|Serbia|Spain|Sweden 1
United States|Austria|Canada|Czechia|France|Germany|Italy 1
United States|Austria|Canada|France 1
United States|Austria|Canada|France|Germany|Greece|Israel|Italy|Japan|Norway|Portugal|Singapore|Spain|Sweden|Taiwan|United Kingdom 1
United States|Austria|Canada|France|Germany|Hungary|Italy|Slovakia|Spain|Switzerland 1
United States|Austria|Canada|France|Germany|Israel|Italy|Spain|United Kingdom 1
United States|Austria|Canada|France|Germany|Italy|Spain|United Kingdom 1
United States|Austria|Czech Republic|Finland|France|Germany|Hungary|India|Japan|Malaysia|Netherlands|Russian Federation|Slovakia|Taiwan|Ukraine 1
United States|Austria|Czechia|Hungary|Israel|Poland|Spain 1
United States|Austria|Finland|France|Germany|Italy|Japan|Spain|Sweden|United Kingdom 1
United States|Austria|France|Germany 1
United States|Austria|France|Germany|Spain|United Kingdom 1
United States|Austria|Germany|Israel|Italy|South Africa|Spain|United Kingdom 1
United States|Austria|Hungary|Poland|Slovakia|Slovenia|Spain 1
United States|Austria|Israel|Italy 1
United States|Belgium|Bulgaria|Canada|France|Germany|Hungary|Portugal|Romania|South Africa|United Kingdom 1
United States|Belgium|Czech Republic|France|Hungary|Italy|Poland|Spain|United Kingdom 1
United States|Belgium|France 1
United States|Belgium|Germany|Italy|Poland|Spain 1
United States|Brazil|Canada|France|Germany|Italy|Netherlands|Portugal|United Kingdom 1
United States|Bulgaria|France|India|Russian Federation|Ukraine|United Kingdom 1
United States|Canada|Czech Republic|France|Germany|Hungary|Poland|Romania|Serbia|United Kingdom 1
United States|Canada|Czech Republic|Germany|Israel|Italy|Poland|Serbia 1
United States|Canada|Czechia|Israel|Italy|Poland|Portugal|Turkey 1
United States|Canada|Estonia|Germany|Latvia|Lithuania|Poland|Romania|Spain|Ukraine 1
United States|Canada|Estonia|Latvia|Lithuania|Romania|Ukraine 1
United States|Canada|France|Germany|Hungary|Italy|Spain 1
United States|Canada|France|Germany|Poland|Romania|Spain|Ukraine 1
United States|Canada|Germany|Spain 1
United States|Canada|Israel|Italy|Korea, Republic of|Spain|Taiwan|United Kingdom 1
United States|Canada|Israel|Norway|Spain|United Kingdom 1
United States|Chile|India|Mexico|Peru 1
United States|Czechia|France|Germany|Hungary 1
United States|Czechia|France|Germany|Italy|Spain 1
United States|Czechia|France|Germany|Italy|Spain|United Kingdom 1
United States|Estonia|Germany|Hungary|Poland|Slovakia 1
United States|Estonia|Korea, Republic of|Russian Federation|Slovakia 1
United States|Finland|Greece|Hungary|Italy|Slovakia|Spain 1
United States|France|Germany|Italy 1
United States|Germany|New Zealand 1
United States|Germany|Poland|Slovakia 1
United States|Germany|United Kingdom 1
United States|Guatemala|Romania 1
United States|Hungary|Poland|Slovakia|Spain 1
United States|India 1
United States|India|Italy 1
United States|Italy 1
United States|Italy|Serbia|United Kingdom 1
United States|Korea, Republic of|Malaysia|Singapore|Taiwan 1
United States|New Zealand 1
United States|Spain 1
United States|United Kingdom 1

Sites per Study

Site_count Study_Count
1 1034
2 93
3 36
4 22
5 19
6 13
7 18
8 13
9 7
10 7
11 12
12 11
13 8
14 3
15 10
16 6
17 5
18 9
19 2
20 12
21 7
22 5
23 2
24 7
25 4
26 2
27 2
28 2
29 4
31 4
32 4
33 4
34 3
36 2
38 2
39 3
40 1
41 1
42 5
45 2
46 2
47 3
50 2
51 2
52 2
53 2
54 2
55 3
56 1
57 2
58 1
60 3
61 2
62 1
63 2
65 2
70 2
73 3
74 2
75 4
76 4
77 3
78 2
81 2
83 1
87 3
89 2
95 1
99 1
102 1
105 1
111 1
114 1
118 1
119 1
121 1
125 1
127 1
128 1
130 1
135 2

Phase

Phase Study_Count
N/A 638
Phase 2 273
Phase 1 189
Phase 3 181
Phase 4 96
Phase 1/Phase 2 56
Phase 2/Phase 3 30
Early Phase 1 18

Number of Arms

Number_of_Arms Count_of_Studies
1 324
2 714
3 182
4 94
5 27
6 8
7 3
8 5
9 2
11 1
14 2
NA 119

Number of Updates

Count of Versions Count of Studies
1 179
2 249
3 200
4 173
5 138
6 88
7 73
8 59
9 41
10 34
11 28
12 27
13 20
14 18
15 13
16 13
17 7
18 12
19 11
20 14
21 9
22 8
23 6
24 10
25 3
26 4
27 2
28 3
29 2
30 3
31 2
32 4
33 7
34 2
36 3
37 1
38 1
39 2
50 2
51 2
52 2
60 2
64 1
73 1
86 1
110 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 8405 1302 6.455453
Contacts/Locations 4003 1068 3.748127
Recruitment Status 1817 1057 1.719016
None (earliest Version on record) 1481 1481 1.000000
Study Design 1382 903 1.530454
Outcome Measures 1130 646 1.749226
Eligibility 831 455 1.826374
Interventions 805 526 1.530418
Arms 804 526 1.528517
Study Identification 747 444 1.682432
Sponsor/Collaborators 740 447 1.655481
Study Description 650 419 1.551313
Oversight 562 437 1.286041
More Information 317 118 2.686441
Results 245 245 1.000000
References 239 186 1.284946
Conditions 226 163 1.386503
IPDSharing 152 131 1.160305
Baseline Characteristics 94 76 1.236842
Results Submission Events 81 81 1.000000
Reported Adverse Events 65 55 1.181818
Participant Flow 61 50 1.220000
Documents 50 47 1.063830
2020 Arms 1 1 1.000000
2020Recruitment Status 1 1 1.000000
Quality Control Review has not concludedReturned: June 10 1 1 1.000000
Quality Control Review has not concludedReturned: June 17 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 4.00 2.0000 3.00000 4.00000 2.0000 11.0000 1.0000 5.0000
1st Qu. 16.25 20.0000 16.00000 15.00000 26.5000 36.0000 106.2500 28.0000
Median 20.50 37.0000 25.00000 22.00000 49.0000 70.0000 254.0000 57.5000
Mean 25.50 161.2229 33.42473 38.46429 469.8155 106.5517 284.6839 144.6771
3rd Qu. 30.00 71.0000 45.75000 40.00000 105.5000 149.0000 403.0000 132.0000
Max. 75.00 53480.0000 158.00000 301.00000 100000.0000 420.0000 1174.0000 3500.0000

Trial Group Type

group_type Group_Count
Experimental 1646
Active Comparator 557
Placebo Comparator 398
Other 171
NA 119
No Intervention 114
Sham Comparator 89

Intervention Model

intervention_model Study_Count
Parallel Assignment 811
Single Group Assignment 394
Crossover Assignment 206
NA 30
Sequential Assignment 23
Factorial Assignment 17

Primary Purpose

primary_purpose Study_Count
Treatment 1110
Basic Science 82
Other 74
Diagnostic 67
Supportive Care 63
NA 28
Prevention 22
Health Services Research 17
Screening 9
Device Feasibility 8
Educational/Counseling/Training 1

Observational Studies

Studies by Country

Country Study_Count
United States 193
NA 41
France 28
China 22
Germany 15
Italy 14
United Kingdom 11
Canada 10
Japan 8
Denmark 7
Turkey 7
Taiwan 6
Netherlands 5
Spain 4
United States|Canada 4
Finland 3
Switzerland 3
Austria 2
Egypt 2
Israel 2
Korea, Republic of 2
Austria|Canada|Croatia|Czechia|Greece|Hungary|Ireland|Israel|Romania|Spain|Sweden 1
Austria|Estonia|Kazakhstan|Romania|Serbia|Slovakia|Slovenia 1
Austria|France|Germany|Italy|Netherlands|Spain|Switzerland|United Kingdom 1
Austria|Germany 1
Belgium|France|Germany|Italy 1
Belgium|France|Italy|Switzerland|Turkey 1
Brazil 1
Brazil|China 1
Croatia|Czech Republic|Estonia|Hungary|Romania|Russian Federation|Serbia|Slovakia|Slovenia 1
Croatia|France|Germany|Slovenia 1
Denmark|Italy|Czechia|Germany|Greece|Mexico|Romania|Slovakia|Spain|Switzerland 1
Estonia|Latvia|Romania|Russian Federation|Serbia|Slovakia|Slovenia|Ukraine 1
France|Germany 1
France|Germany|Italy|Spain|United Kingdom 1
France|Germany|Turkey 1
France|Guadeloupe 1
Germany|Italy|Spain 1
Germany|Switzerland 1
Germany|Thailand 1
Hong Kong 1
Israel|Italy 1
Malaysia 1
Russian Federation 1
Spain|United States|Argentina|Canada|France|Germany|Hungary|Israel|Italy|Netherlands|Portugal|Romania|United Kingdom 1
Sweden 1
Thailand 1
United States|Albania|Belgium|Brazil|Germany|Greece|Israel|Italy|Spain|Turkey|United Kingdom 1
United States|Argentina|Korea, Republic of|Spain 1
United States|Australia|Belgium|Hungary|Israel|Italy|Romania|Slovenia|Spain|United Kingdom 1
United States|Canada|Israel|Netherlands 1
United States|Canada|Puerto Rico 1
United States|Germany 1
United States|Germany|Italy 1

Sites per Study

Site_count Study_Count
1 329
2 19
3 11
4 5
5 6
6 4
7 3
8 1
9 1
10 1
12 3
13 2
14 1
15 3
20 1
21 1
24 2
27 2
30 2
32 1
42 1
49 1
52 1
54 2
57 2
58 1
59 1
76 1
98 1
102 1
103 1
118 1
119 1
140 1
211 1
215 1
238 1
273 1
278 1
284 1
311 1
317 1

Number of Updates

Count of Versions Count of Studies
1 58
2 69
3 59
4 51
5 33
6 30
7 18
8 14
9 15
10 3
11 2
12 5
13 5
14 4
15 4
16 7
17 5
18 4
19 3
20 2
21 1
22 1
23 1
24 2
25 1
26 3
27 2
28 2
32 1
35 1
37 1
38 1
46 1
50 1
64 1
66 1
78 2
93 1
97 1
103 1
110 1
115 1
120 1
123 1
172 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 3310 364 9.093407
Contacts/Locations 988 284 3.478873
Study Description 541 150 3.606667
Study Design 456 255 1.788235
Recruitment Status 452 277 1.631769
None (earliest Version on record) 422 422 1.000000
Eligibility 352 159 2.213837
Outcome Measures 237 150 1.580000
Study Identification 204 143 1.426573
Sponsor/Collaborators 192 136 1.411765
Groups 149 109 1.366972
Interventions 149 109 1.366972
Oversight 130 104 1.250000
References 115 55 2.090909
Conditions 68 56 1.214286
Results 35 35 1.000000
More Information 33 17 1.941177
IPDSharing 30 30 1.000000
Baseline Characteristics 12 11 1.090909
Participant Flow 10 8 1.250000
Reported Adverse Events 10 8 1.250000
Documents 6 5 1.200000
Results Submission Events 6 6 1.000000

Enrollment Metrics

Measure Observational
Min 1.000
1st Qu 38.000
Median 100.000
Mean 1889.842
3rd Qu 375.500
Max 214962.000

Observation Model

observational_model Study_Count
Cohort 183
Case-Control 72
NA 53
Case-Only 48
Case Control 31
Other 21
Ecologic or Community 6
Case-Crossover 2
Defined Population 2
Family-Based 2
Defined Population, Natural History 1
Natural History 1

Time Perspective

time_perspective Study_Count
Prospective 261
Cross-Sectional 89
NA 29
Retrospective 28
Other 11
Longitudinal, Retrospective/Prospective 2
Cross-Sectional, Prospective 1
Cross-Sectional, Retrospective/Prospective 1

Registries

Studies by Country

Country Study_Count
NA 3
Turkey 3
United States 3
Italy 2
Egypt 1
Israel 1
Korea, Republic of 1
Mexico 1
Netherlands 1
Sweden 1
Taiwan 1
United Kingdom 1
United States|Canada 1
United States|Canada|Israel 1

Sites per Study

Site_count Study_Count
1 16
2 2
7 2
8 1

Number of Updates

Count of Versions Count of Studies
1 3
2 6
3 4
4 4
5 2
6 1
12 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 50 18 2.777778
None (earliest Version on record) 21 21 1.000000
Contacts/Locations 19 13 1.461539
Recruitment Status 12 10 1.200000
Outcome Measures 7 7 1.000000
Study Description 7 7 1.000000
Study Design 6 6 1.000000
Oversight 3 3 1.000000
Eligibility 2 2 1.000000
Groups 2 2 1.000000
Interventions 2 2 1.000000
References 2 2 1.000000
Study Identification 2 2 1.000000
Conditions 1 1 1.000000
IPDSharing 1 1 1.000000

Enrollment Metrics

Measure Registries
Min 18.0
1st Qu 60.0
Median 300.0
Mean 283249.9
3rd Qu 550.0
Max 5940299.0

Registry Model

observational_model Study_Count
Cohort 11
Case-Control 4
Case-Only 2
Case Control 1
Ecologic or Community 1
Family-Based 1
Other 1

Time Perspective

time_perspective Study_Count
Prospective 15
Cross-Sectional 4
Other 1
NA 1

Follow-up

target_duration Study_Count
1 Day 3
2 Years 3
3 Years 3
5 Years 3
1 Week 2
1 Month 1
13 Weeks 1
15 Years 1
17 Years 1
6 Months 1
7 Days 1
8 Weeks 1